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Distinguish between smooth manifolds in four dimensions.

A pair of overdots placed over a symbol, as in x^.., most commonly used to denote a second derivative with respect to time, i.e., x^..=d^2x/dt^2.

Can be used to invert a Laplace transform.

In the American system, 10^(39).

Each centered convex body of sufficiently high dimension has an "almost spherical" k-dimensional central section.

The Season 1 episode "Sacrifice" (2005) of the television crime drama NUMB3RS mentions econometrics.

sum_(i=1)^n((partialu)/(partialx_i))^2=1.

Ein(z) = int_0^z((1-e^(-t))dt)/t (1) = E_1(z)+lnz+gamma, (2) where gamma is the Euler-Mascheroni constant and E_1 is the En-function with n=1.

A mathematical statement of the equivalence of two quantities. The equality "A is equal to B" is written A=B.

An equilibrium point in game theory is a set of strategies {x^^_1,...,x^^_n} such that the ith payoff function K_i(x) is larger or equal for any other ith strategy, i.e., ...